Even more than the book, I suggest Google.

http://drupal.org/node/1023440

Also, the passwords are hash + salt. Unless you wrote a script to figure that out, your password will now not work.
Jamie Holly
http://www.intoxination.net 
http://www.hollyit.net
On 9/6/2012 6:02 PM, Anthony wrote:
I am running a local drupal install from the book "Using Drupal" (highly recommended) and somehow have managed to lock my admin user with too many invalid attempts (5). Where in the DB can I set back these 5 attempts? I have already changed the password in the user's table.
Thanks
Tony

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Anthony Stefan Maciejowski